Board Thread:General Discussion/@comment-31398341-20170409101440/@comment-5427970-20170615165813

Well, thats why you dont set it on those sorts of physicals, every pokemon can be one shot in some way, so its unfair to judge them by their weaknesses only. You can predict the switch in, and either Cosmic Power or Psycho Shift, which should actually make you good to go, as long as you consistantly roost and not get crit (Which is fairly reliable)

It only takes a switch in from someone who is defensive and can barely touch sigilyph. and a good psycho shift for you to be able to switch in from a physical. For a special attacker, its a different story however, but even enough Cosmic powers can allow you to set up.

Reuniclus definitely doesnt outclass it as magic guard, Reuniclus isnt used for the Psycho Shift Stored power sweeper, but rather a calm mind trick room sweeper. Its also very slow aswell, so most of the physicals you have stated up there can beat it just as bad. Sigilyph has a higher Sp.Attack base stat, as well as STAB unlike Clefable, so a stored power clefable really doesnt outclass it either.

Though i would be fine with a Simple B or C+ after what you have suggested, but Sigilyph played properly, as in switched in and primarily set up against pokemon that can barely scathe it, such as defensive/special defensive staples, it can easily get the set up, and easily annoy after that